Rigid-flexible combined river channel protection slope

Abstract

The utility model relates to a rigid and flexible combined riverway protection slope, which comprises: a backfill layer in the form of an inclined downward slope, an upper part of which is provided with a concave part along the slope; a non-woven fabric layer, which is placed on the bottom surface of the concave part; a lead wire stone cage layer, which is placed on the non-woven fabric layer; and a concrete surface layer, which is cast on the lead wire stone cage layer. The utility model has a rigid surface layer, a flexible inner layer and a backfill layer, which are combined to play a role in soil fixation and water prevention.

Description

Technical Field

[0001] This utility model relates to the field of riverbank protection, and in particular to a rigid-flexible riverbank protection method. Background Technology

[0002] The following are some of the common techniques used in existing riverbank protection technologies: ① The slope protection uses a 500mm thick gabion, and the surface of the gabion is covered with 300mm thick planting soil. When the flood volume is large, the planting soil on the surface of the gabion is easily washed away, and the gabion rolls up as a whole, causing the slope protection to fail and the riverbank to break. ② The slope protection uses 500mm thick concrete. Because concrete is rigid, when the flood volume is large, the concrete slope protection cannot completely protect the embankment. The concrete bottom backfill is eroded, causing the riverbank to break. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a riverbank protection structure that combines rigidity and flexibility, which has both a rigid surface layer and a flexible inner layer combined with the backfill layer, so as to play the role of soil stabilization and waterproofing.

[0004] To address the aforementioned issues, a rigid-flexible combined riverbank revetment was adopted, comprising: The backfill layer has a downward sloping shape, with a recessed section reserved at the top along the slope. A non-woven fabric layer is placed on the bottom surface of the recess; A layer of wire gabions is placed on a layer of non-woven fabric. The concrete surface layer is poured on top of the gabion layer.

[0005] With this structure, the stones in the two layers of gabion are heavier, which is conducive to compacting the backfill layer; moreover, the stones in the gabion layer are locked by flexible wires and will not be washed away by water flow, which is conducive to soil stabilization, and the non-woven fabric layer is conducive to the bonding between the gabion layer and the surrounding backfill soil.

[0006] As a further improvement of this utility model, a planting layer is provided on the backfill layer, and the planting layer is spaced out and positioned obliquely above the concave portion.

[0007] With this structure, the planting layer helps to provide ecological protection.

[0008] As a further improvement of this utility model, the non-woven fabric layer is turned up along the side of the wire gabion layer to the top surface of the wire gabion layer and fixed; fine stone concrete is poured inside the wire gabion layer.

[0009] As a further improvement of this utility model, expansion joints are provided at intervals on the concrete surface layer.

[0010] As a further improvement of this utility model, grouting pipes are fixedly inserted into the side and bottom surfaces of the recess. The grouting pipes are inserted into the gabion layer and connected to the hollow anchor rods by elbows, which lead out to the concrete surface layer.

[0011] This structure, through hollow anchor grouting and grouting pipes, reinforces the backfill layer, which facilitates a better bond between the backfill layer and the gabion layer. After grouting, the backfill layer's ability to resist water erosion is further enhanced, which helps to stabilize the soil and prevent soil loss.

[0012] As a further improvement of this utility model, an anchor plate is inserted through the upper end of the hollow anchor rod, and the upper end of the hollow anchor rod is connected to the anchor plate by a nut threaded in.

[0013] With this structure, the anchor bolts can be anchored to secure the concrete surface layer.

[0014] As a further improvement of this utility model, the wire gabion layer is filled with pebbles.

[0015] With this structure, pebbles can be easily sourced locally from the riverbed.

[0016] This utility model has a rigid surface layer and a flexible inner layer combined with the backfill layer, which can play a role in soil stabilization and waterproofing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0018] Figure 2 This is a schematic diagram of the installation structure of the grouting pipe.

[0019] Reference numerals in the attached drawings: 1. Backfill layer; 101. Recess; 102. Planting layer; 2. Non-woven fabric layer; 3. Gabion layer; 4. Concrete surface layer; 5. Fine aggregate concrete; 6. Grouting pipe; 7. Elbow; 8. Hollow anchor rod; 9. Anchor plate; 10. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1 like Figures 1-2 As shown, a rigid-flexible riverbank revetment includes: Backfill layer 1 has a downward sloping slope, and a recess 101 is reserved on the upper part along the slope. Non-woven fabric layer 2, which is placed on the bottom surface of recess 101; The lead wire gabion layer 3 is placed on the non-woven fabric layer 2; The concrete surface layer 4 is poured on the gabion layer 3.

[0023] With this structure, the stones in the two wire mesh gabion layers 3 are heavier, which is conducive to compacting the backfill layer 1; moreover, the stones in the wire mesh gabion layer 3 are locked by flexible wire mesh and will not be washed away by water flow, which is conducive to soil stabilization. The non-woven fabric layer 2 is conducive to the bonding between the wire mesh gabion layer 3 and the surrounding backfill soil.

[0024] In this embodiment, a planting layer 102 is provided on the backfill layer 1, and the planting layer 102 is spaced out and positioned obliquely above the recess 101.

[0025] With this structure, the planting layer 102 helps to provide ecological protection.

[0026] In this embodiment, the nonwoven fabric layer 2 is turned up along the side of the wire gabion layer 3 to the top surface of the wire gabion layer 3 and fixed; fine stone concrete 5 is poured inside the wire gabion layer 3.

[0027] In this embodiment, expansion joints are provided at intervals on the concrete surface layer 4.

[0028] In this embodiment, grouting pipes 6 are fixedly inserted into the side and bottom surfaces of the recess 101. The grouting pipes 6 are inserted into the gabion layer 3 and connected to the hollow anchor rods 8 by elbows 7. The hollow anchor rods 8 lead out to the concrete surface layer 4.

[0029] With this structure, the backfill layer is reinforced by grouting through the hollow anchor rod 8 and the grouting pipe 6. This facilitates the further bonding between the backfill layer 1 and the gabion layer 3. After grouting, the backfill layer is further enhanced to resist water erosion, which is beneficial for soil stabilization and preventing soil loss.

[0030] In this embodiment, the upper end of the hollow anchor rod 8 is threaded through the anchor plate 9, and the upper end of the hollow anchor rod 8 is threadedly connected to the anchor plate 9 with a nut 10 and tightened.

[0031] With this structure, after the anchor rod 9 is anchored, it is beneficial to tighten the concrete surface layer 4.

[0032] In this embodiment, the wire gabion layer 3 is filled with pebbles.

[0033] With this structure, pebbles can be easily sourced locally from the riverbed.

[0034] In this embodiment, the river embankment is backfilled with gravel from the riverbed. The slope protection uses a combination of two layers of wire mesh gabions and concrete. The gabions are connected by wire binding to form a flexible protective structure. C30F150 fine aggregate concrete is poured into the gabions; the surface layer is 300mm thick C30F150 concrete, tightly combining the rigid concrete with the flexible gabion structure to jointly resist flood erosion. During construction, the concrete inside the gabions and the surface concrete are poured separately. After the gabions are installed, the non-woven fabric at the bottom of the gabion is turned up from the side to the top surface. Local material is backfilled on the outside to act as a side formwork, and then the concrete inside the gabions is poured. The concrete inside the gabions is poured until it covers the top surface of the gabions, and the concrete surface is roughened. A longitudinal expansion joint is set every 10m in the 300mm thick concrete on the surface of the gabions, and the surface layer is constructed in sections according to the location of the expansion joints.

[0035] This construction method combines rigid concrete and flexible gabions to jointly prevent floods exceeding the standard, effectively protecting the riverbank and slopes, preventing riverbank breaches, and safeguarding the lives and property of the people.

[0036] This embodiment has the following advantages: (1) Combining rigidity and flexibility, with strong flood resistance: This construction method combines rigid concrete and flexible gabion. The gabion is flexible, while the concrete is rigid. The combination of rigidity and flexibility significantly enhances the flood resistance of the slope. (2) Economical and practical, energy-saving and low-carbon: The pebbles in the dike filling and gabion can make full use of the sand and gravel in the river channel, avoiding the purchase of materials. In addition, in order to improve the flood resistance, it is necessary to increase the slope strength and cross-sectional size. The traditional method is to use large-section reinforced concrete slope protection, which requires a large amount of steel and concrete raw materials, consumes a lot of resources, and increases carbon emissions. This construction method is economical and practical, low-carbon and environmentally friendly, and avoids the waste of resources.

[0037] (3) Simple process and high efficiency: The concrete is poured in two stages and the gabion is backfilled with local materials, which saves the cost of gabion formwork support, reduces construction costs and improves construction efficiency.

[0038] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A rigid-flexible combined riverbank revetment, characterized in that... include: The backfill layer (1) is a downward slope with a recess (101) reserved on the upper part along the slope. A non-woven fabric layer (2) is placed on the bottom surface of the recess (101); The lead wire gabion layer (3) is placed on the non-woven fabric layer (2); The concrete surface layer (4) is poured on the gabion layer (3).

2. The rigid-flexible combined riverbank revetment according to claim 1, characterized in that... A planting layer (102) is provided on the backfill layer (1), and the planting layer (102) is spaced out above the recess (101).

3. The rigid-flexible combined riverbank revetment according to claim 1, characterized in that... The nonwoven fabric layer (2) is turned up along the side of the wire gabion layer (3) to the top surface of the wire gabion layer (3) and fixed; fine stone concrete (5) is poured inside the wire gabion layer (3).

4. The rigid-flexible combined riverbank revetment according to claim 3, characterized in that... Expansion joints are provided at intervals on the concrete surface layer (4).

5. The rigid-flexible combined riverbank revetment according to claim 1, characterized in that... Grouting pipes (6) are fixedly inserted into the side and bottom of the recess (101). The grouting pipes (6) are inserted into the gabion layer (3) and elbows (7) are installed to connect to the hollow anchor rods (8). The hollow anchor rods (8) lead out to the concrete surface layer (4).

6. The rigid-flexible combined riverbank revetment according to claim 5, characterized in that... The upper end of the hollow anchor rod (8) is fitted with an anchor plate (9), and the upper end of the hollow anchor rod (8) is threadedly connected to the anchor plate (9) with a nut (10) and tightened.

7. The rigid-flexible combined riverbank revetment according to claim 1, characterized in that... The gabion layer (3) is filled with pebbles.

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